/***** BEGIN LICENSE BLOCK *****
 * Version: CPL 1.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Common Public
 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/cpl-v10.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Copyright (C) 2006 Charles O Nutter <headius@headius.com>
 *  
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the CPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the CPL, the GPL or the LGPL.
 ***** END LICENSE BLOCK *****/

package org.jruby.compiler;

import org.jruby.ast.Node;
import org.jruby.ast.RootNode;

/**
 *
 * @author headius
 */
public class RootNodeCompiler implements NodeCompiler {
    
    /** Creates a new instance of RootNodeCompiler */
    public RootNodeCompiler() {
    }
    
    public void compile(Node node, Compiler context) {
        RootNode rootNode = (RootNode)node;
        
        context.startScript();
        
        // create method for toplevel of script
        Object methodToken = context.beginMethod("__file__", null);

        // try to compile the script's body
        try {
            Node nextNode = rootNode.getBodyNode();
            if (nextNode != null) {
                NodeCompilerFactory.getCompiler(nextNode).compile(nextNode, context);
            }
        } catch (NotCompilableException nce) {
            // TODO: recover somehow? build a pure eval method?
            throw nce;
        }
        
        context.endMethod(methodToken);
        
        context.endScript();
    }
}
